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The AN-|AN/SPG-62 is a radar#continuous wave|continuous wave, mechanically steered, radar#Warship combat radars|terminal guidance illumination radar for the RIM-156 Standard SM-2 missile. These missiles use semi-active radar homing for their final guidance, so the Mark 99 fire control subsystem of AEGIS time-shares the illumination radars. Other functions of the Mark 99 system include loading, arming and launching the Standard missiles using the vertical launch system.

Three AN/SPG-62 antennas are visible, at far left and second from right

Primary search and midcourse guidance comes from the AN-|AN/SPY-1 phased-array radar, Only as the missile is making final approach to its target does there need to be AN/SPG-62 energy on the target, so the AEGIS battle management system can have more missiles flying against more targets than it has illuminators.

Burke-class and Kongo-class destroyers have three and Ticonderoga-class cruisers have four AN/SPG-62's. Spanish ocean escort|F-100 frigates, versions of which are used by Australia, Norway and South Korea, have two.

These radars, made by Raytheon, operate in the EU-NATO-US frequency bands|I/J bands with a peak power of approximately 10 kilowatts. Obviously, the specific operating frequencies change frequently and are classified, for reasons of electronic warfare#electronic protection|protecting the missile guidance system from the target's electronic countermeasures (i.e., its electronic warfare#electronic attack|self-protection electronic attack capabilty